Duplicator.



No. 707,57I. Patented Aug. 26, |902.

A. H. FERRIIS C. A. KENWURTHY.

DUPLICATOR;

(Application led Jan. 8, 1902.) (No Modem,

i lino rArns PATENT OFFICE.;

ABRAHAM Il. FERRIS, OF BROOKLYN, 'AND CHARLES A. KENVVORTIAIY, OF

' NEW YORK, N.l Y.

ou PLiCATo R.

SPECIFICATION forming part of Letters Patent N o. 707,571, dated August 26, 1902.

Application filed January 8, 1902. Serial No. 88.922. (No model- To all whom it may concern.'

Be it known that we, ABRAHAM H. FERRIS, a resident of Brooklyn, in the county of Kings, and CHARLES A. KENwoRTHY, a resident of 5 New York, in the county and State of New York, citizens of the United States, have invented certain new and useful Improvements in Duplicators, of which the following is a specification.

1o This invention relates to duplicators of that class having a duplicating medium of sufficient length to permit one working portion thereof to be shifted out'of the Way and a new working portion brought into operative I5 position without waiting to remove the ink from the section first used; and the principal object of the invention is to provide a compact duplicator in which the working portion of the duplicating medium or band substanzo tially fills the opening in the frame or box in which such medium is mounted, While the portion or portions of the medium not in use lie Wholly at one side and preferably below the working portion thereof, and hence are entirely out of the way.

Some of the objects of this construction are to provide a working surface completely lling the opening in its supporting frame or box, to facilitate theproper location of each 3o sheet of paper on which a copy is to be made by transfer from the ink negative of the duplicating medium, to leave the whole working area of t-he duplicating apparatus clear, so that there will bel no projecting parts to interfere with the duplicating operation, to remove the unused portion or portions of the duplicating medium from the Working area of the apparatus, and thus prevent injury to those parts of the duplicating medium or band 4o which are not in use, and to shorten the frame or box'in which such medium is mounted, andk thus provide 'a more compact construction. All of these objects are attained by employing a duplicating medium in the form of a band having an ink-receiving or gelatinous surface,- the working portion of which rests on a bed or support extending substantially from end to end of the frame or box in which the various parts of the de- 5o vice are assembled, and by connecting the ends of this band to delivery and take-up rollers disposed below said bed in such positions as to permit either roller to carry substantially the Whole of said duplicating band not in use Withoutinterfering with the transfer of copies from the portion which is in use. We also provide improved means for mounting the delivery and take-up rollers to enable them to be readily inserted in or removed from their supports, either separately or si- 6o multaneously, without injuring the duplicatingband.

Other features of our invention not hereinbefore referred towill be hereinafter described and are clearly shown in the accompanying drawings, in whiche- Figure l is a plan of the duplicator with the cover thrown back part way. Fig. 2 is a horizontal section of the same, the section being taken in the line 2 2, Fig. 3. Fig. 3 is 7o a central vertical longitudinal section of the same.

Similar characters designate like parts in all the figures of the drawings.

The various parts of the duplicator will usually be embodied in a box, such as 5, having a cover 6, hinged to one side thereof in the usual manner. The box 5 in these views is somewhat deeper thanthe box heretofore used for duplicating apparatus, this extra 8o depth being employed to provide space for receiving the unused portions of the duplicating medium when this is in the forln of a band of considerable length, capable of registering at successive points in the length thereof a large number of negative ink impressions before reusing any portion thereof. Ordinarily the duplicatingniedium is a long band, such as `7, of paper having an oiled back and a working face formed by applying 9o to the paper a relatively thin gelatinous film, this band being attached at its ends in any suitable manner to delivery and take-up rollers, such as 8 and 9, which in this instance have short attaching-strips of clothLsuch as l0, secured thereto, to which strips theends of the duplicating-band aref'zonnec'lted.I

In order to provide a suitable support for the working portion 7of the duplicating medium, we prefer to employ a bed, such as l1, 10o which in this case is a fiat surface extending .substantially from end to end of the box 5,

so as to provide at the ends thereof only suf-- cient space to permit the band to pass around the ends of such bed and leave merely a narrow slit at each end of the working portion of the band between it and the adjacent inner end wall 12 or 12 of the box. It will be noticed that the working portion of the duplicating-band is in the same plane as the upper edge of the frame of the box in which the band is mounted, and hence said working portion and the surrounding edges of the box form practically a single surface with no projecting members at the ends of the band tointerfere with the duplicating operation.

We have found that it is difficult to feed a long band of duplicating material, such as is necessary to an apparatus of this type,without providing some means for preventing sidewise movement thereof, and for this reason we have shown herein at 13 a pair of parallel guides at opposite sides of the bed 11 and so located that the Working portion of the band will substantially iill the space between such guides. These guides are preferably narrow strips running from end to end of said bed.

Any suitable means may be employed for supporting the band and also for shifting said band to expose new workin g portions thereof; but the bed 1l and the rollers 8 and 9 are the preferreddevices employedbyus. Theserollers may be mounted in any suitable manner, and in this case one end of each has a conical opening adapted to receive a correspondinglytapered pivot-pin, such as 14, which may be formed at the end of a screw-threaded shank 15 of slightly less diameter than the pivot portion of the device, each pivot being held in place preferably by means of a nut 16. A washer, such as 17, may be interposed between the enlarged pivot portion of the device and the side wall18 of the box through which the pivot-pin passes. At their other ends the rollers 8 and 9 are preferably supported in bearings in hinged sections of the opposite side wall19 of the box. In this construction there are three hinged sections, two of which are designated by 20 and 2l and have bearings for said rollers, while the third is designated by 22 and is hinged at the lower edge of the box and serves to close the outer end of the central compartment 23, formed by a pair of partitions 24 and 25, extending from the bottom of the box and supporting the bed 11, these partitions dividing the box into three compartments, the end ones, 26 and 28, of which walls of the hinged sections 20 and 21. It will be evident that when the rollers are mounted at their outer ends in this manner they may be readily removed from the box or inserted in place therein and the duplicatingband correspondingly shifted. To facilitate the removal of these rollers and the band 7, we prefer to hinge the ends of the box, these hinged sections being designated by 35 and 36 and extending entirely across the box. When it is desired to insert or remove either of the rollers, the corresponding hinged end section of the box should be lowered andthe roller held, after which the short side section 20 or 21 may be swung around toward the center of the box about its hinge 20 or 21' and the roller removed through the open end of the box.

All of the different swinging sections of the box may be hinged and held in place in any suitable manner, the hinges and hooks herein shown being preferably employed for these purposes.

In order to prevent turning back of the rollers after they have been turned forward to bring the desired working surface of the band into place, we make use of stop-pawls coperative with the ratchetwheels 33, two of these pawls being shown herein at 37 and 38, these being pivoted, respectively, on the inner walls ofthe hinged sections 20 and 2l and being released from the ratchet-wheel and shifted out of the path of movement thereof when said hinged sections are thrown open.

All of the working parts of our improved duplicator are inclosed in and protected by a'dust-proof case when closed, and this case may be carried by means of a handle 40 at the back edge thereof. Moreover, the band wound on the delivery and take-up rollers is securely housed in closed compartments and is also protected from the dust which settles on exposed rolls of duplicating material.

What we claim isd 1. In a duplicator, the combination with a box, of a duplicating-band the working portion of which extends substantially from end to end of said box and the remainder of which lies wholly below, and between the ends of, the working portion of said band, and means located between the ends of, and covered by, said working portion for supporting the band and for shifting the same to expose dierent working portions thereof.

2. In a duplicator, the combination with a box having a bed extending substantially from end to end thereof, of a duplicatingband the working portion of which rests on said bed and the remainder of which lies wholly below, and between the ends of, said bed, and means located between the ends of, and covered by, said bed for shifting said band to expose different workin g portions thereof.

3. In a duplicator, the combination with a box, of a duplicating-band the working portion of which extends substantially from end IOC to end of said box and the remainder of which lies wholly below, and between the ends of, the working portion of said band, and band supporting and shifting means embodying delivery and take-up rollers also located below, and between the ends of and covered by, said working portion of said band.

4. In a duplicator, the combination with a box having a bed extending substantially from end to end thereof,of a duplicating-band the working portion of which rests on said bed and the remainder of which lies wholly below, and between the ends of, said bed, and delivery and take-up rollers disposed below, and between the ends of and covered by, said bed.

5. In a duplicator, the combination with a box having a hinged side section, of a bed extending substantially from end to end of said box, a duplicating-band the working portion of which lies onsaid bed and the remainder of which lies wholly below, and between the ends of, the workin g portion of said band, and a pair of band-supporting rollers between the ends of said bed one of which rollers is pivotally supported at one end in said side section.

6. In a duplicator, the combination with a box having a hinged side section and an adjacent hinged end section, of abed extending substantially from end to end of said box, a duplicating-band the working portion of which rests on said bed and the remainder of which lies wholly below, and between the ends of, the working portion of said band, and a pair of band-supporting rollers between the ends of said bed one of which rollers is pivotally supported at one end in said side section.

7. In a duplicator of the class specified, the combination with a box having at one side thereof a pair of hinged sections, of a duplicating band the working portion of which extends substantially from end to end of said box, and band supporting and shifting means embodying delivery and take-up rollers each pivotally supported at one of its ends in one of said hinged sections.

8. In a duplicator, the combination with a box divided by partitions into three transverse compartments and having three hinged side sections for closing the ends of said compartments, of a duplicating-band the workin g portion of which extends substantially from end to end of said box, and band supporting and shifting means embodying delivery and take-up rollers each pivotally supported at one of its ends in one of said hinged sections.

9. In a duplicator, the combination with a box having a bed extending substantially from end to end thereof, of a pair of parallel guides rising from said bed at opposite sides thereof, a duplicating-band the working por tion of which rests on said bed and fills the space between said guides and the remainder of which lies wholly below, and between the ends of, said bed, and means also located below said bed and between the ends thereof and covered thereby for shifting said band to expose different working portions thereof.

lO. In a duplicator, the combination with a box having a hinged side section, of a bed extending substantially from end to end of said box, a duplicating-band the working portion of which rests on said bed and the remainder of which lies wholly below, and between the ends of, the working portion of said band, a pair of band-supporting rollers between the ends of said bed one of which rollers is pivotally supported at one end in said side section and also has at said end a ratchet-wheel, and a stop-pawl pivoted on said hinged section and cooperative with said ratchet-wheel.

Signed at New York, in the county of New York and State of New York, this 2d day of January, A. D. 1902.

ABRAHAM II. FERRIS. CHARLES A. KENWORTHY.

Vitnesses:

C. S. CHAMPIoN, R. CHAMPION. 

